From owner-freebsd-questions@FreeBSD.ORG Wed Aug 30 21:40:40 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ED86616A4E6 for ; Wed, 30 Aug 2006 21:40:40 +0000 (UTC) (envelope-from chad@shire.net) Received: from hobbiton.shire.net (mail.shire.net [166.70.252.250]) by mx1.FreeBSD.org (Postfix) with ESMTP id D3EBF43D7D for ; Wed, 30 Aug 2006 21:40:34 +0000 (GMT) (envelope-from chad@shire.net) Received: from [67.171.127.191] (helo=[192.168.99.68]) by hobbiton.shire.net with esmtpa (Exim 4.51) id 1GIXnW-000OPU-A2 for freebsd-questions@freebsd.org; Wed, 30 Aug 2006 15:40:34 -0600 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: <20060830181240.65785.qmail@web83106.mail.mud.yahoo.com> References: <20060830181240.65785.qmail@web83106.mail.mud.yahoo.com> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: "Chad Leigh -- Shire.Net LLC" Date: Wed, 30 Aug 2006 15:40:33 -0600 To: freebsd-questions Questions X-Mailer: Apple Mail (2.752.2) X-SA-Exim-Connect-IP: 67.171.127.191 X-SA-Exim-Mail-From: chad@shire.net X-SA-Exim-Scanned: No (on hobbiton.shire.net); SAEximRunCond expanded to false Subject: shared cache -- Re: SMP detection X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Aug 2006 21:40:41 -0000 On Aug 30, 2006, at 12:12 PM, backyard wrote: > with HT disabling in FreeBSD is more for the security > issues about a potential exploit whereby one process > in one pipe can access the priveledged information of > a process in another pipe because the two cores share > one processor cache and thus one cache table. To my > knowledge this hasn't been exploited yet. How is this any different than say an Intel Core Duo or Core 2 Duo? I believe they have a shared cache as well for each (real) processor core. Chad --- Chad Leigh -- Shire.Net LLC Your Web App and Email hosting provider chad at shire.net